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33 * @(#)ktrace.h 8.1 (Berkeley) 6/2/93
34 * $FreeBSD: src/sys/sys/ktrace.h,v 1.19.2.3 2001/01/06 09:58:23 alfred Exp $
35 * $DragonFly: src/sys/sys/ktrace.h,v 1.7 2006/05/20 02:42:13 dillon Exp $
38 #ifndef _SYS_KTRACE_H_
39 #define _SYS_KTRACE_H_
42 #include <sys/types.h>
47 #ifndef _SYS_SIGNAL_H_
48 #include <sys/signal.h>
58 typedef struct ktrace_node *ktrace_node_t;
62 * operations to ktrace system call (KTROP(op))
64 #define KTROP_SET 0 /* set trace points */
65 #define KTROP_CLEAR 1 /* clear trace points */
66 #define KTROP_CLEARFILE 2 /* stop all tracing to file */
67 #define KTROP(o) ((o)&3) /* macro to extract operation */
69 * flags (ORed in with operation)
71 #define KTRFLAG_DESCEND 4 /* perform op on all children too */
74 * ktrace record header
77 int ktr_len; /* length of buf */
78 short ktr_type; /* trace record type */
79 pid_t ktr_pid; /* process id */
80 char ktr_comm[MAXCOMLEN+1]; /* command name */
81 struct timeval ktr_time; /* timestamp */
86 * Test for kernel trace point (MP SAFE)
88 #define KTRPOINT(td, type) \
89 ((td->td_proc) && (((td)->td_proc->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type))))
96 * KTR_SYSCALL - system call record
100 short ktr_code; /* syscall number */
101 short ktr_narg; /* number of arguments */
103 * followed by ktr_narg register_t
105 register_t ktr_args[1];
109 * KTR_SYSRET - return from system call record
116 register_t ktr_retval;
120 * KTR_NAMEI - namei record
123 /* record contains pathname */
126 * KTR_GENIO - trace generic process i/o
133 * followed by data successfully read/written
138 * KTR_PSIG - trace processed signal
149 * KTR_CSW - trace context switches
153 int out; /* 1 if switch out, 0 if switch in */
154 int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
158 * KTR_USER - data comming from userland
160 #define KTR_USER_MAXLEN 2048 /* maximum length of passed data */
164 * kernel trace points (in p_traceflag)
166 #define KTRFAC_MASK 0x00ffffff
167 #define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
168 #define KTRFAC_SYSRET (1<<KTR_SYSRET)
169 #define KTRFAC_NAMEI (1<<KTR_NAMEI)
170 #define KTRFAC_GENIO (1<<KTR_GENIO)
171 #define KTRFAC_PSIG (1<<KTR_PSIG)
172 #define KTRFAC_CSW (1<<KTR_CSW)
173 #define KTRFAC_USER (1<<KTR_USER)
175 * trace flags (also in p_traceflags)
177 #define KTRFAC_ROOT 0x80000000 /* root set this trace */
178 #define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */
179 #define KTRFAC_ACTIVE 0x20000000 /* ktrace logging in progress, ignore */
182 void ktrnamei (struct proc *,char *);
183 void ktrcsw (struct proc *,int,int);
184 void ktrpsig (struct proc *, int, sig_t, sigset_t *, int);
185 void ktrgenio (struct proc *, int, enum uio_rw, struct uio *, int);
186 void ktrsyscall (struct proc *, int, int narg, register_t args[]);
187 void ktrsysret (struct proc *, int, int, register_t);
188 void ktrdestroy (struct ktrace_node **);
189 struct ktrace_node *ktrinherit (struct ktrace_node *);
193 #include <sys/cdefs.h>
196 int ktrace (const char *, int, int, pid_t);
197 int utrace (const void *, size_t);